Configuring WinWarbler for RTTY Operation

on the Configuration window's Soundcard tab, select the Soundcard to be used in the PSK & RTTY Reception panel; if transmitting via AFSK, select the Soundcard to be used in the the Transmission panel's PSK & RTTY sub-panel

on the Main window,

set the Operating Mode panel to RTTY

on the Configuration window's RTTY tab

check the enabled box

set the Speed to 45.45

set the Shift to 170

set the Default TxPwer to the RF power output (in watts) that you'll be using

to have the 2Tone demodulator decode RTTY into a Receive pane separate from the Receive pane displaying RTTY decoded by the MMTTY engine,

in the 2Tone panel

check the enabled box

click the Setup button

in the 2Tone Settings window,

in the Receive Settings panel, select the soundcard from which 2Tone should decode RTTY; you can

select the same soundcard specified in the PSK & RTTY Reception panel on the Configuration window's Soundcard tab, in which case the 2Tone and MMTTY demodulators will decode the same RTTY signals

select a different soundcard, e.g. one whose input is connected to a sub-receiver or second receiver.

select the correct soundcard channel (Left or Right)

in the Set Mark and Space Tones panel,

set the Mark Frequency to 2125

set the Space Frequency to 2295

set the Display width in Hz to 3000

set the Operating Mode panel to Normal Decode

set the Speed panel to 45.45 baud

click the OK button

on 2Tone's Main window,

use the top button on the left to enable or disable AFC

repetitively click the middle on the left to select the desired Decoding Mode:

Decoding Mode

Purpose

Flat

for flat slow fading with mark and space fading at the same time

Flutter

for very rapid fading conditions

Selectiv

for when mark and space fade independently of each

Spread

when the signal's spectrum is spread over a wider bandwidth by the propagation

if you are running on Microsoft Vista or Windows 7 or Windows 8, it is important that your soundcard driver's sample rate be an integral multiple of the MMTTY engine's clock rate. The MMTTY engine's default clock rate is 11,025 hz; the default sample rate for most sound card drivers is 48,000 hz, which is not an integral multiple of 11,025 hz. To address this,

click the MMTTY Setup button to make the MMTTY engine's Setup window appear on screen and

select the MMTTY Setup window's Misc tab

in the Clock panel, change the clock selector from 11025 to 12000

click the MMTTY Setup window's OK button

on the Configuration window's Display tab, click the Set Default Colors button

on the Main window,

in the Receive panel,

check the AFC box

uncheck the BPF box

uncheck the Reverse box

set the Squelch Threshold to ~25 by clicking in the Signal Quality display to position the Squelch Bar:

in the Transmit panel,

check the net box

uncheck the reverse box

in the Tuning Display panel,

set the Vert height to 1.0

set the Horiz zoom to 1

Other RTTY options

Decoding and generating CW, RTTY, and other digital modes by a controlling an external Modem connected to a serial port; supported modems include the KAM 98, MFJ 464, PK232, PK900, and PTC-IIe